P.A.A.M. van der Geld

during spontaneous smiling and speech

Anne Marie Kuijpers-Jagtman, Paul Oosterveld, A. Kuijpers-Jagtman, 2008 .

[The smile line, a literature search]

P.A.A.M. van der Geld, M. Waas, 2003 .

Smiling and speaking in a dental perspective : a dental and psychological approach to the smile line, tooth display, and smile attractiveness

P.A.A.M. van der Geld, 2009 .